In 1683, an Ottoman army that stretched from horizon to horizon set out to seize the "Golden Apple", as Turks referred to Vienna. The ensuing siege pitted battle-hardened Janissaries wielding 17th-century grenades against Habsburg armies, widely feared for their savagery. The walls of Vienna bristled with guns as the besieging Ottoman host launched bombs, fired cannons, and showered the populace with arrows during the battle for Christianity's bulwark.